2016-2017 Triangles Unit

Monday, November 28, 2016
File(s) for the Post: 2016-2017 Triangles Unit


Hello all! It's been awhile... I have SO much to share with NOT so much time! :/ I've been busy with my masters class and I wanted to post some of my interactive notebook ideas before Christmas break.

Here are some pages from my interactive notebook over classifying triangles. On the side, we put classify by sides next to the first three and classify by angles on the bottom four.



My resource class completed the following cut and paste chart over classifying triangles. They loved this and some found it challenging!



The following pages are newly created notebook pages over "The Triangle Inequality Theorem." Overall, I loved it and I felt that students understood it more this year than previous years. I will try it with my resource classes on Thursday to see how they do. 





We normally complete the inquiry-based lesson over why the sum of the interior angles of a triangle equals 180 (that is what is to the left of our notes). We also complete an activity that shows why the two remote interior angles of a triangle is equal to the exterior angle. This is my rushed notebook... I will update this post of what is actually in student's notebook. 




I introduce the following pages first before we jump into triangle congruence proofs.








 I am looking forward to using the following triangle congruence foldable with my students this year along with the reference sheet. I switch up this lesson every year for some odd reason :).





After this foldable, then we will jump into triangle congruence proofs! I uploaded my triangle congruence proofs in a previous post: CLICK HERE




If I forgot to add a file, let me know and I can add it as soon as possible! If I made a typo, please let me know. Thank you to the readers who emailed me about the typos in the proofs book! :)

25 comments

  1. Hey, I am so glad I came upon your site. You have some awesome, helpful, things. Do you mind to add the Congruent Triangle pages that you use before diving into proofs? Thanks!

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  2. Hey Katrina, Great stuff! I intend to add this link it to a my HS Geometry TEKS livebinder if you do not mind.

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  3. Could you also add the left side documents for classifying triangles and triangle inequality theorem??

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  4. Thank you so much for this resource! It will help my kids so much!

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  5. Out of curiosity, what program do you use to create all your notebook pages? I would love to be able to create some of my own.

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  6. Thank you so much for creating all this amazing stuff! Do you have the files on congruent triangles available? I checked above but none of those were it. Thanks!

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  7. Can you please post the pink Congruent triangle page, the congruent triangles with algebra page, and the reference page? I am teaching a Geometry Part 1 and this would be great for them.

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  8. Could you please post the pink congruent triangles foldable with the algebra examples? I would LOVE to use it! Thanks!

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  9. Could you please post the pink page with algebra examples?

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  10. Love all of your materials and can't wait to try them out! Thank you for being so generous with your foldables!

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  11. I would be interested in the green reference triangle congruence sheet and the gold steps with hints for proof writing. Thanks for the great foldables. My kids really like them too.

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  12. There is a typo in the Triangle Sum Theorem examples. Should read Solve for the value of 'x' and then list not the list. I'm sure you already know this! Love your resources! Thanks so much for sharing! Can you post the information that is on the color paper as well?

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  13. Can you post the steps for triangle proofs? I love that sheet and would love to use it in my interactive notebooks this year!

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  14. Do you mind sharing the triangle congruence reference sheet?
    I appreciate all the documents you put on your website. They are very helpful!!!

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  15. I love all your foldables and reference sheets! I would love the colored sheets in your notebook if you don't mind sharing those as well!

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  16. Can you add the blue and yellow left side pages?

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  18. There is a typo on the triangle congruence foldable. The flap labeled AAS says angle side angle instead of angle angle side

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  19. Hi Katrina Newell,
    You may not be updating this blog any more....but I can hope you would be willing to pass along your page 63, Defining and Naming Triangles/parts, and page 67 Triangle Inequality theorem definition. I am using your resources this year as I venture down the INB road. I have also been supplementing it with other resources from TpT and Khan Academy. Thank you so much for this Blog and your resources. It has made this new adventure so much easier and a great starting point for next year.

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  20. Hi. I am not sure if you are even looking here any more, but on the triangle classifying cut and paste, the equilateral is both acute and equiangular. How did you handle this on the chart in your classes? (I don't think that the "not possible" goes there.

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  21. Hi, there is a typo on the Triangle Congruence Foldable: underneath AAS it says "Angle Side Angle"

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